in fedora 8 final this bug it's not present anymore
i'm using werewolf from day one and it's ok
i'm very sorry for not posting here, i'm quite a noob when it's come to this things
you can close this bug, and in the future i will know that i must notify if something
it's fixed
thank you
fedora rocks

system-config-network-1.5.5-1.fc8 has been pushed to the Fedora 8 testing repository. If problems still persist, please make note of it in this bug report.
If you want to test the update, you can install it with
su -c 'yum --enablerepo=updates-testing update system-config-network'. You can provide feedback for this update here: http://admin.fedoraproject.org/updates/F8/FEDORA-2008-2995